Display module and display device

Abstract

The present disclosure provides a display module and a display device. In the display module, light emitted by a light source passes through a color conversion film layer and an optical material layer into a display panel; the optical material layer is fixed on a film-fixed side; compensation structure includes a middle region and a peripheral region surrounding the middle region at a side facing the color conversion film layer, an orthogonal projection of the middle region onto a plane where a light-exiting surface of the display panel is located coincides with a display region of the display panel, an orthogonal projection of the peripheral region onto the plane at least partially overlaps with a non-display region of the display panel, the peripheral region is provided with a fluorescent material layer; and at least a part of the fluorescent material layer extends to the middle region.

What is claimed is: 
     
         1 . A display module, comprising a film-fixed side and a non-film-fixed side, and further comprising a light source, and a compensation structure, a color conversion film layer, an optical material layer and a display panel laminated one on another;
 wherein light emitted by the light source passes through the color conversion film layer and the optical material layer into the display panel;   the optical material layer is fixed on the film-fixed side; and   the compensation structure comprises a middle region and a peripheral region surrounding the middle region at a side facing the color conversion film layer, an orthogonal projection of the middle region onto a plane where a light-exiting surface of the display panel is located coincides with a display region of the display panel, an orthogonal projection of the peripheral region onto the plane where the light-exiting surface of the display panel is located at least partially overlaps with a non-display region of the display panel, the peripheral region is provided with a fluorescent material layer for absorbing light emitted by the light source and generating target light, at least a part of the fluorescent material layer extends to the middle region, and in a direction parallel to the display panel, a minimum width of the fluorescent material layer at the film-fixed side in a direction perpendicular to a boundary of the middle region adjacent to the fluorescent material layer is less than a minimum width of the fluorescent material layer at the non-film-fixed side in a direction perpendicular to the boundary of the middle region adjacent to the fluorescent material layer,   wherein the light source comprises a light guide plate and a lamp strip, the light guide plate comprises a first surface and a second surface arranged opposite to each other and a lateral surface arranged between the first surface and the second surface, the lamp strip is arranged at the lateral surface of the light guide plate, and light emitted by the lamp strip enters the light guide plate from the lateral surface of the light guide plate; the color conversion film layer is arranged at the first surface of the light guide plate, and the optical material layer is arranged at a side of the color conversion film layer away from the light guide plate; and the compensation structure comprises a reflection sheet arranged at the second surface of the light guide plate, and a peripheral region of the reflection sheet is provided with the fluorescent material layer,   wherein the fluorescent material layer comprises a fixed-side portion arranged at the film-fixed side and merely arranged in the peripheral region,   wherein the fluorescent material layer comprises a non-fixed-side portion arranged at the non-film-fixed side and arranged in both the peripheral region and the middle region,   wherein the display region is of a rectangular shape, and a contour of each of the first surface and the second surface of the light guide plate is of a rectangular shape; the light guide plate comprises a first lateral surface, a second lateral surface, a third lateral surface and a fourth lateral surface connected in an end-to-end manner, the first lateral surface is arranged at the film-fixed side, and the second lateral surface, the third lateral surface and the fourth lateral surface are arranged at the non-film-fixed side; and the non-fixed-side portion comprises a second portion, a third portion and a fourth portion, the second portion is arranged close to the second lateral surface, the third portion is arranged close to the third lateral surface, and the fourth portion is arranged close to the fourth lateral surface, and   wherein the display module further comprises a middle frame arranged at least around the non-film-fixed side, the middle frame covers a part of an edge of the light guide plate; and the color conversion film layer comprises an invalid portion, and at the non-film-fixed side, an orthogonal projection of the invalid portion onto the light guide plate is arranged within an orthogonal projection of the middle frame onto the light guide plate.   
     
     
         2 . The display module according to  claim 1 , wherein the light source comprises a lamp plate, the lamp plate is arranged at a side of the color conversion film layer away from the optical material layer, and the lamp plate is reused as the compensation structure. 
     
     
         3 . The display module according to  claim 1 , wherein the fluorescent material layer comprises a mixed material layer of ink and fluorescent powder, and a mass percentage of the ink to the fluorescent powder ranges from 100/40.5 to 100/24.5. 
     
     
         4 . The display module according to  claim 3 , wherein the mass percentage of the ink to the fluorescent powder ranges from 100/25.5 to 100/24.5. 
     
     
         5 . The display module according to  claim 1 , wherein the display region is of a rectangular shape other than a square shape, the display region comprises a long boundary and a short boundary, the film-fixed side is arranged at a same side as the long boundary, and in the middle region, a minimum width of the second portion is greater than a minimum width of the third portion and a minimum width of the fourth portion is greater than a minimum width of the third portion. 
     
     
         6 . The display module according to  claim 1 , wherein a layout density of the fluorescent material layer decreases gradually in a direction from the peripheral region to the middle region. 
     
     
         7 . The display module according to  claim 6 , wherein the fixed-side portion comprises a first layout region and a second layout region; a layout density m1 of the fixed-side portion in the first layout region is greater than or equal to 80%, and a layout density m2 of the fixed-side portion in the second layout region is greater than or equal to 30% and less than or equal to 50%; and a boundary of the second layout region close to the middle region coincides with the boundary of the middle region, the second layout region is arranged between the middle region and the first layout region, and a boundary of the second layout region away from the middle region coincides with a boundary of the first layout region close to the middle region, and/or
 wherein the third portion comprises a third layout region, a fourth layout region and a fifth layout region arranged in sequence; a layout density m3 of the third portion in the third layout region is greater than or equal to 80%, a layout density m4 of the third portion in the fourth layout region is greater than or equal to 30% and less than or equal to 50%, and a layout density m5 of the third portion in the fifth layout region is greater than or equal to 15% and less than or equal to 25%; a minimum distance d1 between an orthogonal projection of a boundary of the third layout region away from the middle region onto the light guide plate and a light guide boundary of the light guide plate arranged at a same side as the third layout region is less than or equal to 1.5 mm; a minimum distance d2 between an orthogonal projection of a boundary of the fourth layout region away from the middle region onto the light guide plate and the light guide boundary is greater than 1.5 mm and less than or equal to 5 mm; and a minimum distance d3 between an orthogonal projection of a boundary of the fifth layout region away from the middle region onto the light guide plate and the light guide boundary is greater than 5 mm and less than or equal to 9 mm, and/or   wherein the second portion comprises a sixth layout region, a seventh layout region, an eighth layout region and a ninth layout region arranged in sequence; a layout density m6 of the second portion in the sixth layout region is greater than or equal to 80%, a layout density m7 of the second portion in the seventh layout region is greater than or equal to 30% and less than or equal to 50%, a layout density m8 of the second portion in the eighth layout region is greater than or equal to 15% and less than or equal to 25%, and a layout density m9 of the second portion in the ninth layout region is greater than or equal to 5% and less than or equal to 15%; a minimum distance d4 between an orthogonal projection of a boundary of the sixth layout region away from the middle region onto the light guide plate and a light guide boundary of the light guide plate arranged at a same side as the sixth layout region is less than or equal to 1.5 mm; a minimum distance d5 between an orthogonal projection of a boundary of the seventh layout region away from the middle region onto the light guide plate and the light guide boundary is greater than 1.5 mm and less than or equal to 5 mm; a minimum distance d6 between an orthogonal projection of a boundary of the eighth layout region away from the middle region onto the light guide plate and the light guide boundary is greater than 5 mm and less than or equal to 9 mm; a minimum distance d7 between an orthogonal projection of a boundary of the ninth layout region away from the middle region onto the light guide plate and the light guide boundary is greater than 9 mm and less than or equal to 11 mm; and a layout of the fourth portion is the same as the second portion.   
     
     
         8 . The display module according to  claim 1 ,
 wherein a minimum width of the invalid portion in a direction parallel to the light guide plate is between 1 mm and 1.5 mm, and/or   wherein the optical material layer comprises a prism layer and a brightness enhancement film, and the prism layer is arranged between the color conversion film layer and the brightness enhancement film; and at the non-film-fixed side, an orthogonal projection of the prism layer onto the color conversion film layer and/or an orthogonal projection of the brightness enhancement film onto the color conversion film layer do not overlap the invalid portion.   
     
     
         9 . The display module according to  claim 1 , further comprising a middle frame, wherein the middle frame comprises a first portion arranged at the lateral surface of the light guide plate and a second portion covering at least a part of an edge of the first surface; a width X of a target portion in the fluorescent material layer satisfies X=X1+X2+X3, X1 satisfies 
       
         
           
             
               
                 
                   
                     X 
                     ⁢ 
                     1 
                   
                   Y 
                 
                 = 
                 
                   
                     d 
                     ⁢ 
                     1 
                   
                   
                     d 
                     ⁢ 
                     2 
                   
                 
               
               , 
             
           
         
       
       Y is a distance between the display panel and the color conversion film layer in a direction perpendicular to the display panel, d1 is a width of a boundary of the color conversion film layer beyond a boundary of the prism layer at a side where the target portion is located, d2 is an overall thickness of the optical material layer in the direction perpendicular to the display panel, X2 satisfies: 
       
         
           
             
               
                 
                   L 
                   5200 
                 
                 × 
                 6 
               
               , 
             
           
         
       
       L is actually measured brightness of structures in the display module other than the display panel at the side where the target portion is located, X3 is a maximum width of the middle frame at the side where the target portion is located, in a direction parallel to a reflection surface of the reflection sheet and in a direction perpendicular to the boundary of the middle region at the side where the target portion is located; and the target portion comprises any one of the fixed-side portion, the second portion, the third portion and the fourth portion,
 wherein in the direction parallel to the reflection surface of the reflection sheet, X3 is less than or equal to 8 mm in the direction perpendicular to the boundary of the middle region at the side where the target portion is located, and/or 
 wherein the light guide plate is provided with a target boundary at a side where the at least a part of the edge is located, and a width of the at least a part of the edge is less than or equal to 10 mm in a direction parallel to the light guide plate and perpendicular to the target boundary. 
 
     
     
         10 . The display module according to  claim 1 , wherein in the middle region, the minimum width of the third portion is less than or equal to 4 mm, and the minimum width of the second portion and/or the minimum width of the fourth portion are less than or equal to 9 mm. 
     
     
         11 . The display module according to  claim 1 , wherein the lamp strip is arranged at the film-fixed side,
 wherein the lamp strip comprises a lamp strip for emitting blue light, the fluorescent material layer comprises a yellow fluorescent material layer, and the color conversion film layer comprises a red/green quantum dot film.   
     
     
         12 . A display device, comprising the display module according to  claim 1 . 
     
     
         13 . A display module, comprising a non-film-fixed side, a light source, and a compensation structure, a color conversion film layer, an optical material layer and a display panel laminated one on another,
 wherein light emitted by the light source passes through the color conversion film layer and the optical material layer into the display panel; and   the compensation structure comprises a middle region and a peripheral region surrounding the middle region at a side facing the color conversion film layer, an orthogonal projection of the middle region onto a plane where a light-exiting surface of the display panel is located coincides with a display region of the display panel, an orthogonal projection of the peripheral region onto the plane where the light-exiting surface of the display panel is located at least partially overlaps with a non-display region of the display panel, the peripheral region is provided with a fluorescent material layer for absorbing light emitted by the light source and generating target light;   at least a part of the fluorescent material layer extends to the middle region; and at the non-film-fixed side, a first distance is provided between an orthogonal projection of a boundary of the optical material layer onto a plane where the display panel is located and an orthogonal projection of a boundary of the display region close to the boundary of the optical material layer onto the plane;   in a direction parallel to the plane, the fluorescent material layer is provided with a first width in a direction perpendicular to a boundary of the middle region adjacent to the fluorescent material layer; and   the first width is negatively correlated with the first distance.   
     
     
         14 . The display module according to  claim 13 , wherein the first width is inversely proportional to the first distance. 
     
     
         15 . The display module according to  claim 13 , further comprising a film-fixed side, wherein the optical material layer is fixed on the film-fixed side; and in a direction parallel to the display panel, a minimum width of the fluorescent material layer at the film-fixed side in a direction perpendicular to the boundary of the middle region adjacent to the fluorescent material layer is less than a minimum width of the fluorescent material layer at the non-film-fixed side in a direction perpendicular to the boundary of the middle region adjacent to the fluorescent material layer. 
     
     
         16 . The display module according to  claim 13 , wherein the light source comprises a light guide plate and a lamp strip, the light guide plate comprises a first surface and a second surface arranged opposite to each other and a lateral surface arranged between the first surface and the second surface; the lamp strip is arranged at the lateral surface of the light guide plate, and light emitted by the lamp strip enters the light guide plate from the lateral surface of the light guide plate; the color conversion film layer is arranged at the first surface of the light guide plate, and the optical material layer is arranged at a side of the color conversion film layer away from the light guide plate; and the compensation structure comprises a reflection sheet arranged at the second surface of the light guide plate, and the peripheral region of the reflection sheet is provided with the fluorescent material layer.